last index of
finds the last occurrence of a substring in a string
(string subject, string search, long end) -> long
If subject contains search at or before index end, returns the index of the last such occurrence. Returns -1 otherwise.
If end is nil, it is interpreted as the last index of subject.
Returns nil if subject is nil or search is nil.
Parameters
| Name | Type | Description |
|---|---|---|
subject |
string | The string to search in |
search |
string | The string to find |
end |
long |
The index of the last character where search should begin. Indexes are zero-based, i.e. the first character is at index 0. Set to |